Riveting-machine attachment.



O. MALLORY.

RIVBTING MACHINE ATTACHMENT. APPLIOATION FILED OGT.10, 1910.

1,017,436. Patented Feb. 13,1912.

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OGDEN MALLORY, F OAKLAND, CALIFORNIA.

RIVETING-MACHINE ATTACHMENT.

To all whom it may concern:

Be it known that I, OGDEN MALLORY, a citizen of the United States,residing at Oakland, in the county of Alameda and State of California,have invented new and useful Improvements in Riveting-MachineAttachments, of which the following is a specification.

This invention relates to an attachment for riveting machines andparticularly pertains to an anvil for riveting loops or tubes of leatherand the like.

It is the object of this invention to provide an anvil which is simplein construction and which is adapted to be attached to most rivetingmachines now in use; the principal object being to provide means forupsetting or clenching rivets on the inside of loops or tubes offlexible materials such asleather and the like. A device of thischaracter is especially applicable for use in the manufacture of harnessand other articles made of leather.

The invention consists of the parts and construction and combination ofparts as hereinafter more fully described and claimed having referenceto the accompanying drawings, in which Figure 1 is a side elevation ofthe invenv tion. Fig. 2 is a plan view. Fig. 3 is an end view. Fig. 4 isa detail showing a modified form of pivotal support for the anvil andmovement limiting stop. Fig. 5 is an end view of same. Fig. 6 is asection of a tubular strap as formed by means of this device.

In the drawings A represents a frame or bracket which constitutes asupporting member for a turnable sleeve 2, the latter being mounted on apivot pin 3 threaded in and depending from the underside of the outerend of the bracket A. The end of the bracket A opposite the turnablesleeve 2 is provided with a pin 4 on its upper side which is adapted tobe secured to the plunger or follower head-.5 of any suitable type ofriveting machine. The head 5 may be the plunger or follower of anordinary riveting press, and constitutes the support for the bracket A,which bracket is carried with the follower as the latter is reciprocatedvertically in setting a rivet, as hereafter described.

The turnable sleeve 2 carries an outwardly extending flange or shelf 6on which is mounted an anvil bar or. plate 7 which is Specification ofLetters Patent.

Application filed October 10, 1910.

Patented Feb. 13, 1912.

Serial No. 586,261.

adapted to extend outward to a point beneath or beyond the pin 4-on theend of the bracket A. This anvil bar 7 is approximately half the widthof the shelf 6 and having a setting member 7 on its under side isdesigned to be swung from side to side with the sleeve 2 on the pivotpin 3.

An arm 8 is formed on the upper end of the sleeve 2 which extendsalongside the bracket A and is fitted with a set screw 9 which isadapted to contact with the side of the bracket A to limit the movementof the anvil bar 7 and sleeve 2 in one direction. The set screw 9 beingthreaded in the arm 8 permits of adjustment at this point.

In operation, the anvil arm 7 is inserted in the strap 10 to be rivetedwith the seam or overlap on the underside, as shown in Fig. 6, and arivetll set in place, the anvil bar 7 being swung out from under thebracket A, as shown in Fig. 2 to admit of the strap 10 being placedthereon. The arm 7 is then swung beneath the inner end of the bracket Ain line with the head 5 of the riveting head or follower. The wholebeing then moved in a downward direction carries the bracket A so as tocause the lat-- ter to bear upon the strap or loop, which has beenplaced upon andv surrounds the anvil bar 7, and continued pressureforces the setting member 7 against the rivet 11. The head of the rivet11 rests upon the rigid block or support 11, so that the pressureproduced by the movement of the follower will properly set the rivet.

The pivot pin 3 is of sufliciently greater length than the sleeve 2 toadmit of the anvil arm 7 and the bracket A being separated toaccommodate various thicknesses of material.

By adjusting the thumb screw 9 the position of the outer end of the armmay be regulated in relation to the point of pres sure through the pin 4and plunger head.

Spacing bars 12 of any desired width may be mounted on the shelf 6 toextend alongside the anvil bar 7, the object of which is to insure therivets 11 being placed in alinement throughout the length of a strap 10,when the loop is wider than the anvil bar.

If desired, the set screw 9 may be mounted in a bracket 8 on the frame Aas shown in Figs. 45, and adapted to bear against or come in contactwith a stop 13 formed on the sleeve 2.

By the use of the above described mechanism, I am. enabled to makeadjustments so as to accurately gage and rivet loops of any size, anddispense with fixed. loop anvils which have limited capacity and must bechanged for different sizes.

Having thus described my invention, what I claim and desire to secure byLetters Patent is 1. A riveting machine attachment con sisting of abracket having an end carried in the line of movement of the plungerhead, a pin fixed in the opposite end, an anvil and rivet setter, acarrying sleeve therefor turnable upon the pin, and a stop carried bythe sleeve and contacting with the bracket.

2. A riveting machine attachment consisting of a bracket having an endcarried in the line of movement of the plunger head, a pin fixed in theopposite end, an anvil and rivet setter, a carrying sleeve thereforturnable upon the pin, a stop carried by the sleeve and contacting withthe bracket, and means to adjust the stop and limit the swing of theanvil arm.

3. A riveting machine attachment consisting of a bracket having one endfixed to and movable with the plunger head or follower, a pin fixed atright angles with the opposite end of the bracket, a sleeve turnableupon the pin, and an anvil bar and rivet setter carried by the sleeveand turnable into or out of the path of the plunger head.

i. A riveting machine attachment consisting of a bracket having one endfixed to and movable with the plunger head or follower, a pin fixed atright angles with the opposite end of the bracket, a sleeve turnableupon the pin, an anvil bar and rivet setter carried by the sleeve andturnable into or out of the path of the plunger head, and means forvarying the vertical play of the sleeve to accommodate variousthicknesses of material.

5. A riveting machine attachment consist ing of a bracket having one endfixed to and movable with a plunger head or follower, a pin fixed atright angles with the opposite end of the bracket, a sleeve turnableupon the pin, an anvil bar and rivet setter carried by the sleeve andturnable into or out of the path of the plunger head, a stop by whichthe movement of the anvil bar and rivet setter is limited, and spacingbars adapted to fit within the loop by the side of the anvil bar toretain the loop in position and insure the alinement of the rivets.

6. An attachment for riveting machines,

said attachment comprising a bracket having one end fixed to a movableplunger head or follower, a pin adjustably fixed at right angles withthe opposite end of the bracket, a sleeve turnable upon said pin, ananvil bar and rivet setter carried by the sleeve and adapted to receivea loop to be riveted and to extend into the line of movement of thefollower, an adjustable stop carried by the sleeve and contacting withthe bracket, said stop acting to limit the movement of the bar, andspacing bars adapted to fit between the anvil bar and the side of theloop to retain the latter in alinement while riveting.

7. In a riveting machine, the combination of a plunger, an arm orbracket carried by and extending from the plunger, a sleeve at rightangles with its outer end and turnable with relation to the bracket,said sleeve having an anvil carrying arm adapted to project into thepath of the plunger and turnable to receive a loop to be riveted, an armprojecting from the upper part of the sleeve substantially parallel withthe anvil arm, and an adjusting screw adapted to contact with thebracket to limit the swing of the riveting arm in one direction.

8. In a riveting apparatus, the combination of a plunger, an arm orbracket carried by the plunger and extending outwardly from its point ofsupport, a pin extending at right angles with the outer end of saidbracket, a sleeve and an anvil arm projecting therefrom, said sleevebeing turnable upon the pin, and means for varying the vertical play ofthe sleeve to permit different thicknesses of material to be placed overthe anvil.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

OGDEN MALLORY. Vitnesses G. H. STRONG, CHARLES EDELMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, 1). C.

